Ukuhlanzeka komoya uhlobo lwendinganiso yamazwe ngamazwe esetshenziswa ekamelweni elihlanzekile. Ngokuvamile yenza ukuhlolwa kwegumbi elihlanzekile nokwamukelwa ngokusekelwe esimweni esingenalutho, esingaguquki nesiguquguqukayo. Ukuqina okuqhubekayo kokuhlanzeka komoya nokulawula ukungcola kuyindinganiso eyinhloko yekhwalithi yegumbi elihlanzekile. Indinganiso yokuhlela ingahlukaniswa nge-ISO 5 (Isigaba A/Isigaba 100), i-ISO 6 (Isigaba B/Isigaba 1000), i-ISO 7 (Isigaba C/Isigaba 10000) kanye ne-ISO 8 (Isigaba D/Isigaba 100000).
